यदि \(C={x:x\in \mathbb{N},,2x+3\leq 15}\), तो (C) का सही सूची रूप क्या है?
If \(C={x:x\in \mathbb{N},,2x+3\leq 15}\), what is the correct roster form of (C)?
Explanation opens after your attempt
A. \(C=\{1,2,3,4,5,6\}\)
Concept
From \(2x+3\leq 15\), we get \(2x\leq 12\), so \(x\leq 6\).
Why this answer is correct
Since \(x\in \mathbb{N}\), take natural numbers from (1) to (6).
Exam Tip
Include (0) only when the question clearly allows whole numbers. चरण 1: असमानता \(2x+3\leq 15\) से \(2x\leq 12\), इसलिए \(x\leq 6\)। चरण 2: \(x\in \mathbb{N}\) है, इसलिए (1) से (6) तक प्राकृतिक संख्याएँ लें। चरण 3: शून्य को तभी लें जब प्रश्न में स्पष्ट रूप से अशून्येतर पूर्ण संख्या न दी हो।
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